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Cadmium bromide: Difference between revisions

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Revision as of 13:30, 3 January 2011 editChemLlama (talk | contribs)Extended confirmed users1,039 edits Add info← Previous edit Latest revision as of 17:33, 17 June 2024 edit undoSmokefoot (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers75,010 edits Preparation and structure: reformat ref 
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{{chembox {{Chembox
| Watchedfields = changed
| verifiedrevid = 401612975 | verifiedrevid = 405682296
| Name = Cadmium bromide
| ImageFile =Cadmium-chloride-3D-balls.png | Name = Cadmium bromide
| ImageFile =Cadmium-chloride-3D-balls.png
| ImageName = Cadmium bromide | ImageFile2 = Cadmium bromide tetrahydrate.jpg
| IUPACName = Cadmium(II) bromide | ImageName = Cadmium bromide
| IUPACName = Cadmium(II) bromide
| Chemical Name = CdBr
| OtherNames = Cadmium dibromide | OtherNames = Cadmium dibromide
| Section1 = {{Chembox Identifiers |Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 23011 | ChemSpiderID = 23011
| UNII_Ref = {{fdacite|correct|FDA}} | UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 7726AXS0WH | UNII = 7726AXS0WH
| EINECS = 232-165-1
| InChI = 1/2BrH.Cd/h2*1H;/q;;+2/p-2 | InChI = 1/2BrH.Cd/h2*1H;/q;;+2/p-2
| SMILES = BrBr | SMILES = BrBr
Line 20: Line 22:
| StdInChIKey = KPWJBEFBFLRCLH-UHFFFAOYSA-L | StdInChIKey = KPWJBEFBFLRCLH-UHFFFAOYSA-L
| CASNo = 7789-42-6 | CASNo = 7789-42-6
| CASNo_Ref = {{cascite|correct|CAS}} | CASNo_Ref = {{cascite|correct|CAS}}
| CASNo_Comment =
| CASOther = <br> 13464-92-1 (tetrahydrate)
| RTECS = | CASNo2 = 13464-92-1
| CASNo2_Comment = (tetrahydrate)
| CASNo2_Ref = {{cascite|correct|CAS}}
| RTECS = EU9935000
| PubChem = 24609
}} }}
| Section2 = {{Chembox Properties |Section2={{Chembox Properties
| Formula = CdBr<sub>2</sub> | Formula = CdBr<sub>2</sub>
| MolarMass = 272.22 g/mol | MolarMass = 272.22 g/mol
| Appearance = white to pale yellow crystalline solid | Appearance = white solid
| Density = 5.192 g/cm<sup>3</sup>, solid | Density = 5.192 g/cm<sup>3</sup>, solid
| Solubility = 56.3 g/100 mL (0 °C) <br> 98.8 g/100 mL (20 °C) <br> 160 g/100 mL (100 °C) | Solubility = 56.3 g/100 mL (0 °C) <br> 98.8 g/100 mL (20 °C) <br> 160 g/100 mL (100 °C)
| SolubleOther = soluble in ], ], ] and liquid ]. | SolubleOther = soluble in ], ], ] and liquid ].
| MeltingPt = 568 °C | MeltingPtC = 568
| MeltingPt_notes =
| BoilingPt = 844 °C
| BoilingPtC = 844
| BoilingPt_notes =
| MagSus = -87.3·10<sup>−6</sup> cm<sup>3</sup>/mol
}} }}
| Section3 = {{Chembox Structure |Section3={{Chembox Structure
| CrystalStruct = ], ], SpaceGroup = R-3m, No. 166 | CrystalStruct = ], ], SpaceGroup = R-3m, No. 166
}} }}
| Section7 = {{Chembox Hazards |Section7={{Chembox Hazards
| ExternalMSDS = | ExternalSDS =
| GHSPictograms = {{GHS07}}{{GHS09}}
| EUClass = Harmful ('''Xn''')<br/>Dangerous for the environment ('''N''')
| GHSSignalWord = Warning
| EUIndex = 048-001-00-5
| HPhrases = {{H-phrases|302|312|332|410}}
| NFPA-H = 2
| PPhrases = {{P-phrases|220|273|280|501}}
| NFPA-F = 0
| NFPA-R = 0 | NFPA-H = 3
| NFPA-F = 0
| RPhrases = {{R20/21/22}}, {{R50/53}}
| NFPA-R = 0
| SPhrases = {{S2}}, {{S60}}, {{S61}}
| LD50 = 225 mg/kg, oral (rat) | LD50 = 225 mg/kg, oral (rat)
| REL = Ca<ref name=PGCH>{{PGCH|0087}}</ref>
| PEL = TWA 0.005 mg/m<sup>3</sup> (as Cd)<ref name=PGCH/>
| IDLH = Ca <ref name=PGCH/>
}} }}
| Section8 = {{Chembox Related |Section8={{Chembox Related
| OtherAnions = ],<br/>] | OtherAnions = ],<br />]
| OtherCations = ],<br/>],<br/>] | OtherCations = ],<br />],<br />]
}} }}
}} }}


'''Cadmium bromide''' is the inorganic compound with the formula CdBr<sub>2</sub>. It is a white hygroscopic solid. It also can be obtained as a mono- and tetrahydrate.<ref name=Brauer/> It has few applications.
'''Cadmium bromide''' is a cream-coloured crystalline ionic ] ] of ] that is soluble in water. It is very toxic, along with other cadmium compounds.


==Preparation and structure==
==Uses==
Cadmium bromide is prepared by heating cadmium with bromine vapor.<ref name=Brauer>{{cite book|author1=F. Wagenknecht|author2=R. Juza|chapter=Cadmium bromide|title=Handbook of Preparative Inorganic Chemistry, 2nd Ed. |editor=G. Brauer|publisher=Academic Press|year=1963|place=NY, NY|volume=2|pages=1096}}</ref> The tetrahydrate has been obtained by crystallization of the dibromide from aqueous solution. At 3.04 g/cm<sup>3</sup>, it is much less dense than the anhydrous material. According to ], the tetrahydrate is a polymer of CdBr<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> with bridging bromide ligands. There are two interstitial water molecules<ref>{{cite journal |doi=10.1107/S0567740878002186 |title=Structure Cristalline de CdBr<sub>2</sub><sup>.</sup>4H<sub>2</sub>O |date=1978 |last1=Leligny |first1=H. |last2=Monier |first2=J. C. |journal=Acta Crystallographica Section B |volume=34 |issue=1 |pages=5–8 |bibcode=1978AcCrB..34....5L }}</ref>
It is used in the manufacturing of ], ] and ].

==Preparation==
Cadmium bromide is prepared by heating cadmium with bromine vapor. Also the compound can be prepared by the treatment of dry ] with glacial ] and ]. Alternatively, it can be obtained by dissolving cadmium or ] in ] and evaporating the solution to dryness under ] in an inert atmosphere.<ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, ISBN 0070494398</ref>


==References== ==References==
<references/> <references />


{{Cadmium compounds}} {{Cadmium compounds}}
{{bromine compounds}}


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{{inorganic-compound-stub}} {{inorganic-compound-stub}}

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